Three season sunrooms in South Gate CA - a bright room you'll actually use
Tired of a bare patio or old porch? We close it in with glass so it turns into a dry, sunny room you sit in.

Is a three season sunroom the right room for your patio?
Three season sunrooms in South Gate, CA are closed rooms with glass or clear plastic in the wall openings that stay off your house's heating and cooling. For most homes here, one is the simplest way to turn a patio, deck or slab into a room you'll use most of the year.
Most calls start with a patio, deck or old porch somebody's tired of looking at, and a room they'd use if it kept out the wind, dust and bugs. The price moves with the size of the room, the condition of the slab or deck it sits on, and how many doors and windows you want. The schedule mostly turns on the city's permit steps and on whether the base needs work before we build on it. You'll get your own figure from the estimate.
What our three season sunroom work includes
These rooms stay separate from your house's heating and cooling, so they cost less and ask less of you, and I make sure you know that before we start. The sunroom industry's specification counts a room like this as unheated space. A room built to be heated or cooled and open to the house has to pass extra tests for air leaks, water leaks and how well it holds heat, so changing your mind later means meeting a higher standard, not just plugging in a unit. The city decides how your room is classified, which is one more reason we settle it on paper first. On the job, we check the slab, deck or wall the room ties into and set the frame. Then we fit the glass or clear panels, hang the doors, seal the joints so rain stays out, and clean up behind us.
If you already have a patio cover and just want the sides closed in, patio enclosures are usually the lighter job. When your house has an odd roofline or you want a room that doesn't come off a standard plan, we also design and build custom sunrooms.
Three season sunroom permits and conditions in South Gate
In South Gate, permits come from the city's Building & Safety Division, which says one is typically required for any home improvement project. Its list names jobs like pool installs and re-roofing but not sunrooms, so that office is where to ask whether your room needs a permit. Some projects may need the Planning Division to review a set of architectural plans first, and that review has its own fees. A project valued higher than $50,000.00, or new construction over 800 square feet, also needs Public Works review and approval. We take care of the permit steps with the city and tell you early if plans or a review come first, because that's usually what sets the start date.
A lot of the houses we see here are older single-story homes with a back slab that's been there a long time. An old slab can be cracked, sloped toward the house or thinner than you'd hope, and the room is only as good as what it sits on. We find the same older slabs on jobs in Lynwood and Huntington Park, so we check that first.
How a three season sunroom gets built
Call and I come out
You call (213) 376-0861 or send the form, and I come out to look at what the room will sit on. I'll also ask how you plan to use the room, because that shapes the design more than anything else.
Get a written estimate
You get a written estimate that says what's in it and what isn't. You know what you're paying for before you sign, and you can compare it with other bids line by line.
We handle permits, then build
We take care of the permit steps with the office that handles your address, then we build. South Gate's permit service runs Monday to Thursday, 7:30 a.m. to 2:00 p.m., with City Hall closed on Fridays, so anything we need from the city runs on a four-day week.
Walk the finished room together
Before we call it done, I walk the finished room with you. If something bothers you, point it out while we're both standing in it.

Get a written estimate for your three season room
We reply within one business day to set up a time. The estimate is free, done in person at your house, and comes with no obligation. I come out, look at the slab, deck or wall the room ties into, and you get a written number that says what's in it and what isn't.
Questions before you book a three season sunroom
How much does a three season sunroom cost in the Los Angeles area?
In the Los Angeles area, a three-season room built on an existing patio, deck or slab usually costs about $110 to $160 per square foot. That figure leaves out insulation, heating and cooling, plumbing work and permits, so those add to the total if your room needs them. Your written estimate gives you a number for your own room.
Can I pull my own permit for a sunroom in South Gate?
You can if you live in the house and the property has 2 units or less, and you'll show the city ID proving you live there. If a company or LLC owns the property, the city calls for a licensed contractor to pull it.
How much can a contractor ask for up front on a sunroom in California?
A contractor can't ask for or take a down payment of more than $1,000 or 10 percent of the total contract price, whichever is less. Later payments follow the value of work completed or materials delivered to your house, and you can ask for a contract that lists each payment due after the down payment. That rule comes from California's Contractors State License Board and covers all home improvement work in the state, not just sunrooms.
How do I care for the doors and windows on a sunroom?
Keep the door and window tracks clean and use a pure silicone spray on them. One sunroom company's guide recommends that because oil-based lubricants tend to attract dirt. The same guide says to keep the weep holes clear, the small openings that let water out, so the room drains the way it should.
What causes a sunroom to get too hot to sit in?
Usually it's a lot of glass facing the afternoon sun and too few windows that open to let the heat out. A three season room isn't on your house's cooling, so we talk through which side it faces, how much of the roof is solid and how many windows open before anything is ordered. A room that's too hot to use is just an expensive porch.
Does a three season sunroom have to meet emergency exit rules?
Yes. Every sunroom type follows the local building code's rules for exits and emergency escape and rescue openings. We plan where the doors and windows go around those rules from the first sketch, whichever room type you choose.
Why South Gate homeowners call South Gate Sunrooms & Patios for three season rooms
Our own crew builds it
Our own crew does the building, and I check on the work as it goes up. You're not handing your backyard to whoever happened to be free that week.
Building rooms since 2017
We've been in business since 2017, and we're known for rooms people actually sit in. That's why I'd rather talk you into the cheaper room than the wrong one.
Licensed, insured and easy to check
We're licensed and fully insured. California's construction trades are licensed by the state board, and its License Check lets you look up any contractor before you sign, us included.
A three season room only earns its keep if you sit in it, so the first conversation is about how you'll use it. Tell us about your patio or deck, or call (213) 376-0861.
Other ways to close in your patio
Patio enclosures
If you already have a patio cover, closing in its sides gives you shelter without building a whole new room.
Custom sunrooms
For a tricky roofline or an unusual footprint, a custom room starts from your house instead of a catalog.
Send your slab size and a few photos
Call (213) 376-0861 or use the form with the size of your patio, deck or slab and a few photos, and I'll show up to the visit already knowing what I'm looking at.





